Electromagnetic separator.



PATENTED MAR. 22, 1904.

M. DINGS. ELECTROMAGNETIC SEPARATOR.

APPLICATION IILED MAY 23, 1903.

no MODEL.

WITNESSES: v I

INVENTO My 2TORNE YA Patented March 22, 1904.

PATENT OFFICE.

MYRON DINGS, OF MILWAUKEE, WISCONSIN.

ELECTROMAGNETIC SEPARATOR. I

SPECIFICATION forming part of Letters Patent No. 755,282, dated March 22, 1904.

Application filed May 23, 1903. i

To aZZ whom it may concern:

Be it known that I, MYRoN DINGS, a citizen of the United States, residing at Milwaukee, county of Milwaukee, and State of Wisconsin, have invented new and useful Improvements in Electromagnetic Separators, of which the following is a specification.

My invention relates to improvements in magnetic separators.

The object of my invention is to providea form of machine which will occupy a small space, but will be capable of acting upon and effectively separatinga maximum quantity of 1 material within a given time.

In the following description reference is bad:

to the accompanying drawings, in which Figure 1 is a central vertical sectional view of my invention. Fig. 2 is a plan view partially broken away. Fig. 3 is a sectional view drawn on line a: a: of Fig. 1.

Like parts are identified by the same reference characters throughout the several views.

1 is the core of a stationaryfelectromagnet, of which 2represents the winding and 3 and 4 the respective pole-pieces. The pole-piece 3 is in the form of a vertical semicircular flange connected with the core by a base-flange 5,and the pole-piece 4 is in the form of a horizontal semicircular flange or .cap, which projects laterally above thewinding 2 at one side of the magnet.

6 is a shaft extending vertically through the magnet-core,with its center line preferably located on the opposite side of the center line of the core from that occupied by the pole-pieces 3 and 4. The shaft 6 supports a disk which constitutes a cap-plate 7, to the under side 'of which rings 8 and 9, of steel or other magnetizable materiahare secured by means of screws 10. A bracket-ring 11, ofnon-magnetic material, such as brass, is interposed between the rings 8 and 9, as shown in Fig. 1. The screws 10 are also of non-magnetic material. The rings 8 and 9 are formed in segments a, as clearly shown in Fig. 2, with gaps 6 between the segments, which are preferably filled with non-magnetic material, such as lead. The lower ring is provided with an annular nonmagnetic depending flange 14. The rings 8 and 9 and bracket-ring 11 constitute a drum Serial Nb. 158,396. (No model.)

which is rotated in a horizontal plane through the medium of the shaft and cap-plate 7.

Motion is communicated to the rings from a source of power through a driving-shaft 15, beveled gear-wheels16 and 17 vertical shaft 6, and ring-supporting disk 7, whereby the rings are caused to rotate in a circular path around the magnet, but eccentric thereto. Above that side of the magnet which is provided with the flanges 3 and lis located a'semiconical shield 20, supported from a frame-bar 21 and arranged to distribute material from a slide 22 downwardly past those segments of the rings 8 and 9 which are opposite to and in the magnetic field of the pole-pieces 3 and 4:. A counter-shield 25 is used to deflect the material discharged from the semiconical shield-2O into the direct path of the magnetic lines radiating from the ring-segments 8 and 9,tl1e material being, in fact, discharged against the ring-bracket 11 and permitted to pass downwardly by gravity along the faces of this bracket and the segments of the lower ring 9. With this arrangement the magnetite and other magn'eticallyattracted material discharged from" the shield 20 will be collected uponthe segments of the rings 8 and 9,while the non-magnetic material, such as sand, will be permitted to pass freely downwardly to a slide 26, which conveys it to a suitable point of final discharge. The magnetite adheres -to the ring segments until carried by the rotation of the rings beyond the magnetic field of the pole pieces 3 and 4:, when, as the segments become demagnetized, this portion of the material is permitted. to drop upon the slide 28, by which it is conveyed to a suitable point of discharge on the opposite side of the machine from that occupied by the slide 26. aback 31, is supported, preferably, at an angle of about forty-five degrees from cross-rods 32 in a position to bear upon the exteriorsurfaces of the rings 8 and 9 on the side of demagneti zation, whereby the material adhering to the ringsegments through residual magnetism will be removed. The brush is normally located at one'side of the point where the supporting-rod 32 approaches nearest to the rings 8 and 9, thus permitting an adjustment of the A brush 30, provided with brush toward the point of greatest proximity between the rod and rings to take up wear.

It will be observed that by providing a filling of non-magnetic material for the gaps 1) between the ring-segments the magnetite is prevented from becoming lodged in the gaps, and thus magnetically connecting the ring-segments. Also by providing the annular shield 14 the magnetite is prevented from adhering to the under surfaces of the segments of the ring 9 or in the spaces between such segments and the pole-piece 3.

While I have described my invention as involving the use of rings formed in segments with intervening non-magnetic gaps, I do not limit the scope of my invention to a form of construction in which such segments are employed, for it will be understood that, if desired, continuous rings of uniform material may be used. As the magnetic force at the point of contact with the brush 30 will be necessarily weak, owing to the distance between the ring and the pole-pieces at this point, the material may therefore be removed by the brush, even though continuous steel rings are used. While I have also used the term ring to describe the segmental carriers for the magnetite, I do not limit the scope of my invention to a form of construction in which such carriers are annular or ring-shaped, as any form of carrier inductively permeable to magnetic lines of force traveling into and out of a magnetic field into which the material is discharged and arranged to permit the free descent of non-magnetized material will come within the scope of my invention.

It will be observed that the pole-piece t is inclosed by the connecting drum formed by the rings 8, 9, and 11, while the pole-piece 3 projects into proximity with the lower end of the drum, the magnetic caps between the polepieces and the respective rings 8 and 9 being therefore at right angles to each other. The downward magnetic pull of the lower piece tends to draw the top of the shaft toward the left, while the magnetic pull of the upper pole-piece is exerted to draw the top of the shaft toward the right. The magnetic pull of the two pole-pieces is thus balanced and friction on the shaft-bearings due to magnetic side pull is avoided.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. The combination of a shaft; a pair of rigidly-connected magnetizable rings separated by non; magnetic material, and supported from said shaft; an electromagnet having one polepiece in proximity to one face of one of the rings, and the other pole-piece in proximity to a face of the other ring substantially at right angles to said face of the first-mentioned ring.

2. The combination of a substantially vertical shaft; a cap-plate therefor of non-magnetic material; a pair of magnetizable rings rigidly secured to the under side of the capplate; a ring of non-magnetic material interposed between said magnetizable rings; an electromagnet eccentric to the rings and having pole-pieces in proximity to the rings at one side of the magnet; and means for feeding material against the outer faces of the rings.

3. The combination of a substantially vertical shaft; a cap-plate therefor of non-magnetic material; a pair of magnetizable rings rigidly secured to the under side of the capplate; a ring of non-magnetic material interposed between said magnetizable rings; an electromagnet eccentric to the rings and having pole-pieces in proximity to the rings at one side of the magnet; and means for feeding material against the outer faces of the rings, said magnetizable rings being each formed of a series of segments connected by non-magnetic material. I

4:. The combination of a substantially vertical shaft and a non-magnetic cap-plate therefor; a pair of rings subdivided into insulated segments and connected with the cap-plate; a ring of non-magnetic material interposed between the magnetizable rings, and covering the opposing faces thereof; said non-magnetic ring having a concave outer face; means for feeding material against said concave face; and an electromagnet having pole-pieces in proximity to those portions of the respective magnetizable rings which are traversing the line of feed.

5. The combination of a drum formed of magnetizable and non-magnetizable rings revoluble on a vertical axis; an electromagnet eccentrically located within the drum; said electromagnet having one pole-piece projecting at one side of the magnet into proximity with the inner face of the drum near one end and another pole-piece of opposite polarity projecting from the same side of the magnet into proximity with the opposing end of the drum; together with a semiconical distributing-shield secured at its upper end to a framebar 21 and having its base covering the side occupied by the magnet pole-pieces, and a concave reversing-shield 25 opposing the lower edge of the distributing-shield.

6. The combination of an electromagnet having pole-pieces projecting at right angles to each other and a set of non-magneticallyconnected magnetizable carriers arranged to travel into and out of the magnetic field of said electromagnet; one of said carriers being arranged to move over one of said pole-pieces and the other carrier at the side of the opposing pole-piece.

In testimony whereof I affix my signature in the presence of two Witnesses.

MYRON DINGS. Witnesses:

LEVERETT 0. WHEELER, JAs. B. ERWIN. 

